Maybe not an economical choice but you can buy digital signage displays. They are typically more expensive but are built for maximum durability and don't include consumer features like streaming.
I bought an LG OLED Wallpaper signage display; it wasn't cheap, or easy to get, but it makes a fantastic TV, with no "apps" or "ads", just one HDMI input for an Apple TV (which I run through a Denon HEOS A/V receiver). 1080p, not 4K, but I'm 55 and couldn't see those pixels from 10 feet anyway ツ It doesn't have CEC, but it does wake on signal. Well worth the cost and trouble.
A lot of them have RJ45 and RS232 ports and you can send commands through them to make some DIY CEC. You'd need to do some hacking and I don't know if they have public APIs, but it's possible.
They're not hard to find. Just search for "signage display". They sell on Amazon, Newegg, B&H, CDW. There's a lot of niche manufacturers, but LG and Samsung are probably the two biggest producers. One other warning, these are frequently built with sturdy casing and can be heavy and they typically sell without any mounting hardware although they can accept any VESA stand.